I've had 13 rescue dogs in my life. At the moment I only have 1 dog, koko the rottweiler, my best friend. I'm a very good human/dog trainer. There is no such thing as a bad dog. Any fault in a dogs behaviour is due to a misunderstanding between their leader, you. I talk to the dog without words, but with energy and body language. I've lived with dogs my whole life, and have a deep understanding within the pack. Dogs need mental and physical simulation to be happy. If they dont, that's where behavioral problems arise. If you love your dog let them join my pack for a walk.